Package: unixODBC

"unixODBC" package binaries on CentOS:

/usr/bin/dltest /usr/bin/isql /usr/bin/iusql /usr/bin/odbc_config /usr/bin/odbcinst

You may install this package on CentOS with yum install unixODBC

"unixODBC" package binaries on Debian:

/usr/bin/isql /usr/bin/iusql

You may install this package on Debian with apt-get install unixODBC